Autoclaved aerated concrete plate fixing device

The utility model discloses an autoclaved aerated concrete plate fixing device which comprises a base, vertical plates are fixedly connected to the two sides of the upper end face of the base, a plurality of transverse plates are arranged between the two vertical plates, a plurality of grooves are formed in the upper end faces of the transverse plates in a transverse array mode, matched balls are arranged in the grooves, and the balls are arranged in the grooves. A plurality of clamping devices are vertically arranged on the vertical plate in an array mode. According to the concrete slab placing device, a concrete slab is placed through the arranged transverse plate, in order to save labor when the concrete slab is manually placed, the balls freely roll in the grooves, the concrete slab can stably and vertically move on the transverse plate, and a handle is manually rotated to enable a threaded rod to drive a clamping plate to transversely move; and therefore, the two clamping plates get close to or away from